Boat



E. A. WRIGHT Dec. 22, 1931.

' BOAT Filed 001;. 27, 1930 I NVEN TOR.

t'DM/ARD ACLA/EI 7' I By W A TTORNE Y.

I ED; STA-res separate means is maximum impact lift to the and a top which will give a suction 11ft to'the Patented Dec. 22, 1931 E TPF ICE T E WARD A. WRIGHT, or WICHIT'A, Kansas Application filed October 27,'i9a0.-sei i a1 K014913351 This invention relates to boats and particularly to the body of the boat.

The primary object of the invention 'isto' y provide a. boat having a top and bottomwhich co-act to maintain the minimum of submergence in the water when the boat is being propelled, this'being' accomplished by providing a bottom adapted to give the boat in the water boat. The profile of the boatis generated on a modulated curve and the water line contour as well as the normally submerged lower portion of the boat is generated on a parabolic curve to offer the least impact resistance or frictional resistance by the water to the boat as it is propelled therethrough.

The nose of the boat is generated on a curve to present the least amount of resistance to the air and water and inasmuch as the boat has both a water lift and an air lift dueto the impact of the water and the air, the degree of submergence in actual practice will be practically nil and since the sides of the ance, the speed of the boat will be enhanced. Means is provided for guiding the boat, a provided for raising and lowering the nose ditional means is banking or sudden turns.

The novelty of the invention will be understood by reference to the following description in connection with the accompanying drawings in which:

Fig. 1 is a plan view of the boat.

Fig. 2' is a side elevational view of the same and Fig. 3 is a cross-sectional view on the line 33 of Figure 2.

By reference to the drawings, it will be observed that the bow or nose of the boat is generated on a parabolic curve with the top of a greater curvature than the bottom and that the tail or stern of the boat sides 6 and. to the stern in that they. arebotli alike, the widest portion of the boat being substantialoat are curved to provide the least resistor bow of the boat and adprovided for effecting Perc'ent f 'u bb -000 "000 comes to a relatively sharp point where the 'rudd'er is located and trailing wheel and water rudder is supported.

The bottom 1 from the bow to the stern has a relatively shallowfc lipv2, slightly curved upwardly toward the'jstern. The top from the bow to the cock-pit 3 is generated on' a relatively wide curve: as indicated at 4 and from the cocl z-pit to thestern, the top is generated on iaf relatively shallow curve 5.. The 7 are symmetrical from the bow 1y at the front of thecock-pit; Within the cock-pit is a seat 8 upon which the operator sits to steer the boat from the rudder bar 9' connectedl byi'flexible cords or cables to the rudder post 10. To the upper endof the post 10, outsidethe hull, is a" wind rudder 11 and connected to the lower end of the post, outside the hull, is a sternsupporting wheel and rudder. 12. The"operator'is,therefore, en-

abled to steer .theboat by the use of his feet.

The boatcan be prop'elledby a propeller 13 driven by an enginefll within the hullini a well known manner.

N ear the stern of the boat ar e two' pivO ed;

connected, normally horizontal finsor. rud ders 15 and 16 on aj'shaft- 17 adapted to be turned through a cable 18 withinreach oftlie middleor waist porl operator and near the tion of the boat are two independent Ilhoriz'ontalwater fins 1 9 and 20, havingaileron actioniso that" they can be tilted in ppposite directions for banking or making sharp turns. The normal waterline ofithe hull is indiEateda-tQI. i i

v F r-a 12-foot baamht fo -owing ime; sions above and below the line 22 arere'commended for the "side ribs; 7

Lower Per cent Upper V LOweW-Contd.

, 14. 52 5. 88 7 18. 36 6. 18 21. 42 6. 96 25. 68 8., 34 29.7 1 8. 58 I 31. 72 8. 82 V 40 31. 8. 28 1 50 29. 34; 7. 26 25. 68 6. 12 7O 20. 64 4:. 98 8O 14. 76 3. 72 8. O4 .2. 4O

- i 000 000 i r Sideelevatio n 12' cord v In other words, the table above givesthe ing' from the sides of the boat near the middle portion thereof. 2. A boat consisting of a hollow member having a parabolic profile having a blunt bow curved upwardly and downwardlywith a bottom curved downwardly'and then upinwardly so that the stern of the boat is relatively narrower than the bow, the shape '00- efficient of the lower cord having definite' relation to the shape co-eflioient of the top cord :wardly and sides curved outwardlyandth'en of the body so as to split theair when the boat is inx motio'n to create pressure on the bottom" and suction lift at the top.

In testimony whereof I aflix my signature. EDWARD A. WRIGHT.

preferred side elevation cord for a 12-foot a boat and 'the'following table gives the top elevation cord for' the same boat; 7

elevation 12' cord 'In actual practice, the water will give a lift to the boat andthe negative pressure created by splitting the air by the boat will cause the air to exert a suction lift so thatthe hull will skim along the surface of the water with the leastfde- 7 ree of submergence i and the stream line 1 ody ofthe boat will I give the maximum amount of water slip so that wave impact or the up-lift impact of side friction will be reduced to a minimum. 7

What I claim'and desire to secure by Letters-Patentis; r 1. A body consistingiof a hollow member, inclosedexcept for a cock-pit 0 enlng, the bow of the boat being vgenerate on v 60. parabolic curves, a rudder at: the sternof the boat depending from thebottom, a rudder at the stern projecting from the top, a pair of. connected, horizontally pivoted rud- I der members in front of the first named rudder members and' a pair of independenta up ly movable, horizontal, flat members proj eot- I 

